Valve-grinding apparatus.



M. B. DURGA.

VALVE GRINDING APPARATUS. APPLICATION FILED SEPT. 24, i914.

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wi l I 1 72 B 61140014401 W zzr a K m y M. B, DURGA. VALVE GRINDING APPARATUS. v APPLICATION FILED SBPTQ l, 1 914. 1,126,735 Patnted F@b.2,1915.

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"VALVEGHINDING APPARATUS.

1 126 735. Epecification of Letters Patent.

PetentedEeb.2,1915.

application filed Sentem'ner as, 1.31%. Serial No. 363,325.

' use, durable, and reliable in operation.

further object of the invention is provide apparatus of the above nientioi character which will eilect a substantial saw ing in both time and labor, in accomplishing the work for which. it is'iutended.

Other objects and advantages of the invention will be apparent during the course of the following description.

l n the accompanying drawings, part of this specification and in "which like numerals are employed to designate like parts throughout the same, Figure 1 is a side elevation of apparatus embodying my invention, showing the samein use, 'l i,q. 2 is a horizontal sectional view taken on line 2-2 of Fig. 1, Fig. 3 is an edge elevation of the same, and, l is a horizontal sectional view taken on line 4-4 of Fig. 1.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of the invention, the numeral 10 designates a vertical post or support, adapted to be rigiblv connected with the cylinder of the engine by any suitable means. This post is preferably formed square in cross-- section. As illustrating a preferred means for attaching the'post to the cylinder of the engine, I have shown the lower end thereof screw-threaded. at 11, "for screw-threaded engagement Within the sparleplug opening of the cylinder. However, any other suitable means may be employed to rigidly at tech this post to the cylinder.

The numeral 11 (see Figs. land 2) dos ignates an adjustable supporting frame, as a whole, including an apertured block or identical.

head 12 longitudinally or vertically adjustably mounted upon the post 10, and clamped thereto in adjustment in the desired vertical position, by a clamping bolt l3 or the like, as shown. Rigidly attached to the ends of the block or head 12 are spaced horizontal arms 14, having blocks or heads 15, horizontally or longitudinally adjustably mounted thereon, the same being clamped to thearms 1 li nad ustinent at the desired longitudinal position, by clamping bolts 16, or the like.

The numeral 17 designates driving means,

as a whim-embodying a reciprocatory frame 12", formed of longitudinally movable rods 18, connected at their ends by depending or curved transverse rods 19, as shown. The rods 18 are mounted to reciprocate within transverse aoerturesQO, formed through the blocks 15. Secured to one transverse rod 19 is a handle 21, by means of 'which the frame 17 mar he reciproca'ted. Connected with the end rods 19 and extending longitudinallv of the frame 17' and beloiv the same,

is a fieXi-hle element 22. such as a cord, cable or the like.

in cross section. v

The numeral 24 designates a nreferahlv verticallv arrana'ed rotatable and lonq'itudinallv movab e sp ndle or shaft. having cvlindrical end no tions 25. and an intermediate portion 96. formed s uare in cross-see tion. to fit within the axialopeninrz m the spool '23. whereby the spool or pulley is splined thereon.

' The numeral 27 (Figs. 1 and 4) de iqnates Y adiustahle hearing-supports, which are rlinallv adiu'stnhlv mowted thereon. Bv

means of aclamuing' bolt 19 each head 28 mav be locked to the post 9 in adiustment at the desired, vertical position This flexible element is wound once about a vertical spool 23. having an amallv extending opening, which s square Each of these bearing sunnorts.

Rigidlv attached tothe head 28 are snaced' horizontal arms 30, upon which is longitudinallv adiustablv' mountedatransverse hearing block 31, ane-rtured to r'eceive the arms 30, and adapted tofbeclaniped -thereto. by

halts 32 and the like. he'bearing bldQkBl is apertured to receive'iilhfl$Dindle24'lind serves as guide the spindle to rotate and to be moved vertically up and down. The intermediate bearing block 31, receiving the square portion 26 of thespindle, has its opening formed sulliciently large whereby it does not interfere with the rotation of the spindle, and serves as a support fat the spool 23 or pulley with which it has slidable engagement, as shown.

Means are provided to move the spindle 24 upwardly when pressure is removed therefrom, comprising an expansible coil spring 33, surrounding the upper end of the spindle andengaging at its lower end the upper bearing block 31. At its upper end, the spring 33 engages a sleeve 34, rigidly at tached to the upper end. of the spindle 24.

' whereby the tool about the spool or pulley Above the sleeve 34 a head 35 has a swiveled connection with the spindle 24. Bigidly and detachably connected with the lower end of the spindle is a holding ele ment or tool 36 to engage with the valve to rotate thesame upon its'seat for grinding the valve and seat, as is customary. It is to be understood that any suitable form oi tool may be attached to the lower end of the spindle, the invention not being restricted to the precise type of tool shown.

The operation of the apparatus is as follows: By placing the left hand upon the head 35, the operator overcomes the springs 33'and moves the spindle 2i downwardly, 3G is brought into holding engagement with the valve, causing the valve to rotate therewith. The head 35 also aids in steadying the apparatus, while in op eration. The operator holds the handle 21,

in the right hand and reciprocates the frame 17. This causes a reciprocatory movement of the flexible element 22, which being wound 23 will cause the same to partake of a reciprocatory rotary movement, rotating or turning the spindle 24 backward and Forward. The movement of the spindle is imparted to the tool 26, which moves the valve in a corresponding manner.

Particular attention is called to the fact that the several parts of the apparatus are readily adjustable, whereby the same maybe applied to engines of dili'ercnt sizes and the spindle brought to the proper position with respect to the valve. A

it is to be understood that the form of my invention herewith shown and described to be,tal en as a preferred example of the same and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thusdescribed-my invention, what I claim ISZ- 1. In a valve grinding apparatus, the commeans for the same, allowing structure and arranged in proximity bination with a supporting structure, of a longitudinally removable rotatable spindle connected with the supporting structure, yielding means to autonnitically move the spindle away from the valve, means whereby the spindle may he moved toward the valve, a pulley splined upon the spindle, a rer :ip1.'ocatory frame connected with the supporting structure, and a flexible element connceted with the rcciprocatory frame and wound about thepulley.

2. Ina valve grinding apparatus,thecombinatiori with a supporting structure, a l0ngitudinally movable rotatable spindle con :nected therewith and adapted to carry a valve grinding tool, a pulley connected with the spindle to rotate the same, a movable member connected with the supporting to the spindle, and a flexible element connected with the movable member and engaging the pulley, substantially as described.

3. In" a valve grinding apparatus, the combination with a supporting structure'adapted to be attached to the cylinder of an engine, a longitudinally movable rotatable spindle connected with the supporting structure and provided "with means whereby the same may be manually moved toward the supporting structure and arranged near thesnindle. a ilCXll'llG element connected with the rcciprocatorv frame and engaging the pulley. anda valve engaging tool connected with the inner end of the spindle.

4. In. a valve grinding apparatus. a supporting member adapted to he rigidly con nccted with the cylinder of an engine. a longitudinally movable rotatable spindle arranged near the supporting member, verticallv and horizontally adjustable means connecting thespindle and supporting member, a spool splined upon the spindle. a reciprocatorv frame arranged near the spool, a flexible element carried by the frame and enuagina the spool, vertically and horizontally adjustable means connecting the recip-' rocatory frame and supporting member, and a valve enga 2mg tool connected with the mner, end of the spindle.

5. In avalve grinding apparatus. the combination with a supporting structure, of a longitudinall movable rotatable spindle connected with the supporting structure and adapted to carry a valve grinding tool, yielding means to automatically move the spindle away from the valve, 21 reciprocatory member connected with the supporting structure, and means whereby the spindle is turned by the reciprocatory movement of the member.

6. In a valve grinding apparatus, a rod having one end screw-threaded to engage within the spark plug opening of the cyliQ- ":1 ca "Timony whereof I affix my signaiurs der, :1 horlzontally ndmstable support ca'r- 1n pregame 0? two wltnesses.

1 ed l; the 10d, 1 011g tucllnally mm 1b b My RON B DURGA.

rotatable spindle connecto with the sup- 5 port and carrying a "alve grinding i001, and Vwitncsses:

means to turn the splndle, substantml y as L. blHODES, described. Dr. A. GALLOW. 

